Method and system for adjusting abnormal zero signal of single-live-wire dimming double-control switch

A dual-control switch and adjustment method technology, applied in energy-saving control technology, electrical components, etc., can solve the problems of abnormal zero signal dimming, abnormal zero signal, etc., and achieve the effect of eliminating the longer or shorter period of the zero signal

Active Publication Date: 2021-01-01
HANGZHOU TUYA INFORMATION TECH CO LTD
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Problems solved by technology

[0004] During the dimming process, due to the different LED power supply circuits of different brands, the zero point signal will be abnormal. The abnormal signal is shown in Figure 4. Since the dimming function is triggered based on the zero point signal interruption, the abnormal zero point signal will lead to dimming. abnormal

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  • Method and system for adjusting abnormal zero signal of single-live-wire dimming double-control switch
  • Method and system for adjusting abnormal zero signal of single-live-wire dimming double-control switch
  • Method and system for adjusting abnormal zero signal of single-live-wire dimming double-control switch

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[0051] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0052] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...

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Abstract

The invention discloses a method for adjusting an abnormal zero signal of a single-live-wire dimming double-control switch. The method comprises the following steps: acquiring a signal period; judgingwhether the signal period is abnormal or not; when the signal period is abnormal, executing an adjusting action; judging whether the signal period is abnormal or not by obtaining the time differenceof two adjacent signal falling edge zero-crossing interruptions; when the time difference is not equal to a first preset value, determining that the signal period is abnormal; and when the time difference is equal to the first preset value, determining that the signal period is normal. Compared with the prior art, the method and the system have the following beneficial effects that the single-firesilicon controlled rectifier dimmer switch product can eliminate burr signals by adopting a filtering algorithm, and can better adapt to LED lamps of different brands.

Description

technical field [0001] The present application relates to the field of smart home, in particular, to a method for adjusting the abnormal zero point signal of a single fire dimming dual control switch. Background technique [0002] In the prior art, in the thyristor-based single-fire dimming dual-control switch, the load light flickers due to mechanical switch vibration and cannot be compatible with different brands of LEDs, which makes the user experience poor. The reason is that the above-mentioned two situations interfere with the zero-point signal, and if they are not dealt with, the above-mentioned problems will be caused. [0003] A normal zero point signal such as figure 1 As shown, the 220V50Hz AC signal is converted into a standard square wave signal through the zero point circuit, the duty cycle is 50%, and the period is 20ms. In dual-control dimming, due to the need to control the action of the mechanical switch, the zero point signal will produce abnormal fluctu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/36H05B45/20H05B45/10H05B47/165
CPCH05B45/36H05B45/20H05B45/10H05B47/165Y02B20/40
Inventor 马晶朱新俊
Owner HANGZHOU TUYA INFORMATION TECH CO LTD
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